CN106033522A - Start-up control system - Google Patents
Start-up control system Download PDFInfo
- Publication number
- CN106033522A CN106033522A CN201510123437.9A CN201510123437A CN106033522A CN 106033522 A CN106033522 A CN 106033522A CN 201510123437 A CN201510123437 A CN 201510123437A CN 106033522 A CN106033522 A CN 106033522A
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- China
- Prior art keywords
- voltage
- resistance
- comparator
- switch element
- control system
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- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
- G06F1/3203—Power management, i.e. event-based initiation of a power-saving mode
-
- G—PHYSICS
- G06—COMPUTING; CALCULATING OR COUNTING
- G06F—ELECTRIC DIGITAL DATA PROCESSING
- G06F1/00—Details not covered by groups G06F3/00 - G06F13/00 and G06F21/00
- G06F1/26—Power supply means, e.g. regulation thereof
- G06F1/32—Means for saving power
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- Engineering & Computer Science (AREA)
- Theoretical Computer Science (AREA)
- Physics & Mathematics (AREA)
- General Engineering & Computer Science (AREA)
- General Physics & Mathematics (AREA)
- Dc-Dc Converters (AREA)
- Direct Current Feeding And Distribution (AREA)
- Control Of Voltage And Current In General (AREA)
Abstract
A start-up control system can control the supply voltage of a power supplier, and comprises a first comparison unit, a second comparison unit, and a switch unit; the first comparison unit receives a switch voltage and a first reference voltage, and compares the switch voltage with the first reference voltage so as to output a first comparison voltage; the second comparison unit receives a first comparison voltage and a second reference voltage, and compares the first comparison voltage with the second reference voltage so as to output a second comparison voltage; the switch unit receives the second comparison voltage, converts a start-up control voltage into the switch voltage according to the second comparison voltage, and outputs the switch voltage to the power supplier; the power supplier outputs the supply voltage for a computer mainboard through the switch voltage.
Description
Technical field
The present invention relates to a kind of opening control system.
Background technology
Computer main board in host computer is generally provided DC voltage by a power supply unit, and it is that each electronic component on computer main board is powered that the ac commercial power voltage of access is converted to some DC voltages by described power supply unit.Traditional power supply unit has low-voltage variation function, when host computer have just enter into resting state just wake up up time, owing to the most non-discharge off of power supply unit is received by the starting-up signal from computer main board, easily cause host computer crash.
Summary of the invention
In view of the foregoing, it is necessary to a kind of opening control system entering low-voltage variation by resting state when avoiding host computer to be waken up up is provided.
nullA kind of opening control system，In order to the supply voltage of a power supply unit is controlled，Described opening control system includes one first comparing unit、One second comparing unit and a switch element，Described first comparing unit receives a switching voltage and one first reference voltage，And voltage is compared in output one first after described switching voltage and the first reference voltage being compared，Described second comparing unit receives described first and compares voltage and one second reference voltage，And compare voltage by described first and the second reference voltage compare after export one second and compare voltage，Described switch element receives described second and compares voltage，And compare voltage according to described second and one start is controlled voltage be converted to described switching voltage and export to power supply unit，It is that a computer main board is powered that described power supply unit exports described supply voltage according to described switching voltage.
nullCompared with prior art，In above-mentioned opening control system，Described first comparing unit receives described switching voltage and the first reference voltage，And export described first after described switching voltage and the first reference voltage being compared and compare voltage，Described second comparing unit receives described first and compares voltage and described second reference voltage，And compare voltage by described first and described second reference voltage compare after export described second and compare voltage，Described switch element receives described second and compares voltage，And compare voltage according to described second and described start is controlled voltage be converted to described switching voltage and export to described power supply unit，It is that described computer main board is powered that described power supply unit exports described supply voltage according to described switching voltage，Avoid the most non-discharge off of described power supply unit to export again supply voltage and wake up described computer main board up and cause deadlock.
Accompanying drawing explanation
Fig. 1 is the block diagram of a better embodiment of opening control system of the present invention.
Fig. 2 is the circuit diagram of opening control system in Fig. 1.
Main element symbol description
| First comparing unit | 100 |
| Second comparing unit | 200 |
| Switch element | 300 |
| Power supply unit | 400 |
| Computer main board | 500 |
| First comparator | U1 |
| First resistance | R1 |
| Second resistance | R2 |
| Second comparator | U2 |
| 3rd resistance | R3 |
| 4th resistance | R4 |
| 5th resistance | R5 |
| 6th resistance | R6 |
| 7th resistance | R7 |
| 8th resistance | R8 |
| Switch element | Q |
| 9th resistance | R9 |
Following detailed description of the invention will further illustrate the present invention in conjunction with above-mentioned accompanying drawing.
Detailed description of the invention
Referring to Fig. 1, in a better embodiment of the present invention, an opening control system includes one first comparing unit 100,1 second comparing unit 200 and a switch element 300.Described first comparing unit 100 receives a switching voltage and one first reference voltage, and exports one first after described switching voltage and the first reference voltage being compared and compare voltage.Described second comparing unit 200 receives described first and compares voltage and one second reference voltage, and compare voltage by described first and the second reference voltage compare after export one second and compare voltage.Described switch element 300 receives described second and compares voltage, and compares voltage according to described second and one start controls voltage be converted to described switching voltage and export to a power supply unit 400.It is that a computer main board 500 is powered that described power supply unit 400 exports a supply voltage according to described switching voltage.
Referring to Fig. 2, described first comparing unit 100 includes that one first comparator U1, described first comparator U1 include input, a reverse input end and an outfan in the same direction.The input in the same direction of described first comparator U1 receives described switching voltage.The reverse input end of described first comparator U1 receives a DC voltage via one first resistance R1.The reverse input end of described first comparator U1 is via one second resistance R2 ground connection.Voltage is compared in the outfan output described first of described first comparator U1.Described DC voltage produces described first reference voltage by described first resistance R1 and the second resistance R2 at the reverse input end of described first comparator U1.
Wherein, the size of described first resistance R1 and the second resistance R2 is respectively 100 kilohms, and the size of described DC voltage is+5 volts.
Described second comparing unit 200 includes one second comparator U2.Described second comparator U2 includes input, a reverse input end and an outfan in the same direction.The input in the same direction of described second comparator U2 receives described DC voltage via one the 3rd resistance R3.The input in the same direction of described second comparator U2 is via one the 4th resistance R4 ground connection.The input in the same direction of described second comparator U2 is electrically connected with the outfan of described second comparator U2 via one the 5th resistance R5.The reverse input end of described second comparator U2 receives described supply voltage via one the 6th resistance R6.The reverse input end of described second comparator U2 is via one the 7th resistance R7 ground connection.The outfan of described second comparator U2 receives described DC voltage via one the 8th resistance R8.Described DC voltage produces described second reference voltage by described 3rd resistance R3, the 4th resistance R4, the 5th resistance R5 and the 8th resistance R8 at the input in the same direction of described second comparator U2.
Wherein, the size of described 3rd resistance R3 is 100 kilohms, the size of described 4th resistance R4 and the 5th resistance R5 is respectively 20 kilohms, the size of described 6th resistance R6 is 15 kilohms, the size of described 7th resistance R7 is 10 kilohms, the size of described 8th resistance R8 is 1 kilohm, and the size of described supply voltage is+12 volts.
Described switch element 300 includes a switch element Q.Described switch element Q includes one first end, one second end and one the 3rd end.First end of described switch element Q is electrically connected with the outfan of described second comparator U2.Second end of described switch element Q receives described start and controls voltage.3rd end of described switch element Q is electrically connected with described power supply unit 400 via one the 9th resistance R9.
Wherein, described switch element Q is N-channel field-effect transistor, and first end of described switch element Q, the second end and the 3rd end are respectively grid, source electrode and drain electrode.
During work, before described computer main board 500 is energized, described switching voltage is the high potential of+5 volts, and the DC voltage of described+5 volts is+2.5 volts by the size of the first reference voltage that described first resistance R1 and the second resistance R2 produces.The first of the outfan output of described first comparator U1 compares the state that voltage is electronegative potential and high-impedance state.After described computer main board 500 is energized, the current potential of the current potential of the input in the same direction of the described second comparator U2 reverse input end higher than described second comparator U2, the outfan of described second comparator U2 exports the second of a high potential and compares voltage.First end of described switch element Q receives the second of described high potential and compares voltage.Described switch element Q turns on.The switching voltage that the start control voltage of one electronegative potential is converted to an electronegative potential is exported to described power supply unit 400 by described switch element Q.Described power supply unit 400 exports described supply voltage according to the switching voltage of described electronegative potential.
In the galvanization of described computer main board 500, described DC voltage is+2.67 volts by the size of the second reference voltage that described 3rd resistance R3, the 4th resistance R4, the 5th resistance R5 and the 8th resistance R8 produce.The input in the same direction of described first comparator U1 receives the switching voltage of described electronegative potential all the time.The current potential of the input in the same direction of described first comparator U1 is less than the first reference voltage of described+2.5 volts.The first of the outfan output of described first comparator U1 is compared voltage and is always electronegative potential.The current potential of the reverse input end of described second comparator U2 is less than the second reference voltage of described+2.67 volts.The outfan of described second comparator U2 persistently exports the second of high potential and compares voltage.Described switch element Q tends to remain on.
When described computer main board 500 enters resting state, described switching voltage is returned to the high potential of+5 volts.The first of the outfan output of described first comparator U1 is compared voltage and also returns to the state of electronegative potential and high-impedance state.The supply voltage of described+12 volts starts to reduce from+4.8 volts in the dividing potential drop of the reverse input end generation of described second comparator U2 by described 6th resistance R6 and the 7th resistance R7.The current potential of the reverse input end of described second comparator U2 is more than described second reference voltage.The outfan of described second comparator U2 exports the second of an electronegative potential and compares voltage.First end of described switch element Q receives the second of described electronegative potential and compares voltage.Described switch element Q ends.The start control voltage of described electronegative potential cannot be converted to the switching voltage of electronegative potential and export to described power supply unit 400 by described switch element Q.Described power supply unit 400 cannot export described supply voltage, it is to avoid the described the most non-discharge off of power supply unit 400 exports again supply voltage and wakes up described computer main board 500 up and cause deadlock.
In the discharge process of described power supply unit 400, described DC voltage is+0.45 volt by the size of the second reference voltage that described 3rd resistance R3, the 4th resistance R4 and the 5th resistance R5 produce.Only it is discharged to the current potential second reference voltage less than described+0.45 volt of the reverse input end of described second comparator U2 when described power supply unit 400, when the supply voltage of i.e. described+12 volts is discharged to+1.125 volt, the outfan of described second comparator U2 the most again exports the second of described high potential and compares voltage.Described switch element Q the most again turns on and can be converted to by the start control voltage of described electronegative potential the switching voltage of electronegative potential and exports to described power supply unit 400.Described power supply unit 400 exports described supply voltage according to the switching voltage of described electronegative potential and wakes up described computer main board 500 up, it is to avoid described power supply unit 400 enters low-voltage variation state.
Claims (9)
- null1. an opening control system，In order to the supply voltage of a power supply unit is controlled，Described opening control system includes one first comparing unit、One second comparing unit and a switch element，It is characterized in that: described first comparing unit receives a switching voltage and one first reference voltage，And voltage is compared in output one first after described switching voltage and the first reference voltage being compared，Described second comparing unit receives described first and compares voltage and one second reference voltage，And compare voltage by described first and the second reference voltage compare after export one second and compare voltage，Described switch element receives described second and compares voltage，And compare voltage according to described second and one start is controlled voltage be converted to described switching voltage and export to power supply unit，It is that a computer main board is powered that described power supply unit exports described supply voltage according to described switching voltage.
- 2. opening control system as claimed in claim 1, it is characterized in that: described first comparing unit includes one first comparator, described first comparator includes an input in the same direction, one reverse input end and an outfan, the input in the same direction of described first comparator receives described switching voltage, the reverse input end of described first comparator receives a DC voltage via one first resistance, the reverse input end of described first comparator is via one second resistance eutral grounding, voltage is compared in the outfan output described first of described first comparator, described DC voltage produces described first reference voltage by described first resistance and the second resistance at the reverse input end of described first comparator.
- 3. opening control system as claimed in claim 2, it is characterised in that: the size of described first resistance and the second resistance is respectively 100 kilohms, and the size of described DC voltage is+5 volts.
- null4. opening control system as claimed in claim 2，It is characterized in that: described second comparing unit includes one second comparator，Described second comparator includes an input in the same direction、One reverse input end and an outfan，The input in the same direction of described second comparator receives described DC voltage via one the 3rd resistance，The input in the same direction of described second comparator is via one the 4th resistance eutral grounding，The input in the same direction of described second comparator is electrically connected with the outfan of described second comparator via one the 5th resistance，The reverse input end of described second comparator receives described supply voltage via one the 6th resistance，The reverse input end of described second comparator is via one the 7th resistance eutral grounding，The outfan of described second comparator receives described DC voltage via one the 8th resistance，Described DC voltage passes through described 3rd resistance、4th resistance、5th resistance and the 8th resistance produce described second reference voltage at the input in the same direction of described second comparator.
- 5. opening control system as claimed in claim 4, it is characterized in that: the size of described 3rd resistance is 100 kilohms, the size of described 4th resistance and the 5th resistance is respectively 20 kilohms, the size of described 6th resistance is 15 kilohms, the size of described 7th resistance is 10 kilohms, the size of described 8th resistance is 1 kilohm, and the size of described supply voltage is+12 volts.
- 6. opening control system as claimed in claim 5, it is characterised in that: the size of described first reference voltage is+2.5 volts.
- 7. opening control system as claimed in claim 5, it is characterized in that: in the galvanization of described computer main board, the size of described second reference voltage is+2.67 volts, when described computer main board enters resting state and discharges at described power supply unit, the size of described second reference voltage is+0.45 volt.
- 8. opening control system as claimed in claim 4, it is characterized in that: described switch element includes a switch element, described switch element includes one first end, one second end and one the 3rd end, first end of described switch element is electrically connected with the outfan of described second comparator, second end of described switch element receives described start and controls voltage, and the 3rd end of described switch element is electrically connected with described power supply unit via one the 9th resistance.
- 9. opening control system as claimed in claim 8, it is characterised in that: described switch element is N-channel field-effect transistor, and the first end of described switch element, the second end and the 3rd end are respectively grid, source electrode and drain electrode.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510123437.9A CN106033522B (en) | 2015-03-20 | 2015-03-20 | Opening control system |
| US14/714,377 US9568968B2 (en) | 2015-03-20 | 2015-05-18 | Power control system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510123437.9A CN106033522B (en) | 2015-03-20 | 2015-03-20 | Opening control system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN106033522A true CN106033522A (en) | 2016-10-19 |
| CN106033522B CN106033522B (en) | 2019-01-25 |
Family
ID=56924645
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201510123437.9A Active CN106033522B (en) | 2015-03-20 | 2015-03-20 | Opening control system |
Country Status (2)
| Country | Link |
|---|---|
| US (1) | US9568968B2 (en) |
| CN (1) | CN106033522B (en) |
Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097808C (en) * | 1997-08-31 | 2003-01-01 | 三星电子株式会社 | Automatic wake-up device for radio automatic recognition terminal and communication method using the terminal |
| CN100583633C (en) * | 2006-09-29 | 2010-01-20 | 联发科技股份有限公司 | Power-on reset circuits |
| JP2010282260A (en) * | 2009-06-02 | 2010-12-16 | Seiko Epson Corp | Electric power source circuit |
| CN102346529A (en) * | 2010-08-03 | 2012-02-08 | 环旭电子股份有限公司 | Power supply control circuit |
| US20130080798A1 (en) * | 2011-09-28 | 2013-03-28 | Fujitsu Limited | Power supply switching apparatus |
| CN104218533A (en) * | 2014-10-09 | 2014-12-17 | 上海斐讯数据通信技术有限公司 | Power input overvoltage turn-off protection circuit |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH04322136A (en) * | 1991-04-18 | 1992-11-12 | Matsushita Electric Ind Co Ltd | Power supply |
| US7965112B2 (en) * | 2006-09-29 | 2011-06-21 | Mediatek Inc. | Power-on reset circuits |
-
2015
- 2015-03-20 CN CN201510123437.9A patent/CN106033522B/en active Active
- 2015-05-18 US US14/714,377 patent/US9568968B2/en active Active
Patent Citations (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1097808C (en) * | 1997-08-31 | 2003-01-01 | 三星电子株式会社 | Automatic wake-up device for radio automatic recognition terminal and communication method using the terminal |
| CN100583633C (en) * | 2006-09-29 | 2010-01-20 | 联发科技股份有限公司 | Power-on reset circuits |
| JP2010282260A (en) * | 2009-06-02 | 2010-12-16 | Seiko Epson Corp | Electric power source circuit |
| CN102346529A (en) * | 2010-08-03 | 2012-02-08 | 环旭电子股份有限公司 | Power supply control circuit |
| US20130080798A1 (en) * | 2011-09-28 | 2013-03-28 | Fujitsu Limited | Power supply switching apparatus |
| CN104218533A (en) * | 2014-10-09 | 2014-12-17 | 上海斐讯数据通信技术有限公司 | Power input overvoltage turn-off protection circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| US20160274630A1 (en) | 2016-09-22 |
| CN106033522B (en) | 2019-01-25 |
| US9568968B2 (en) | 2017-02-14 |
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Effective date of registration: 20201110 Address after: No. 599, South Road, Zhenze Town, Wujiang District, Suzhou City, Jiangsu Province 215200 Patentee after: Suzhou Tianqi New Material Technology Co., Ltd Address before: 430205 Hubei city of Wuhan province Optics Valley East Lake New Technology Development Zone Road No. two Foxconn Technology Park Patentee before: HONG FU JIN PRECISION INDUSTRY (WuHan) Co.,Ltd. Patentee before: HON HAI PRECISION INDUSTRY Co.,Ltd. |